Rhodium(I)-Catalyzed Reductive Cyclocarbonylation of Internal Alkynes: Atom-Economic Process for Synthesis of 2-Cyclopenten-1-ones, 5-Alkylidenefuran-2(5 <i>H</i>)-ones and Indan-1-ones
作者:Qiufeng Huang、Ruimao Hua
DOI:10.1002/chem.200802462
日期:2009.4.6
Economical atoms: 2‐Cyclopenten‐1‐ones, 5‐alkylidenefuran‐2(5H)‐ones and indan‐1‐ones have been synthesized by atom‐economic reductivecyclocarbonylation of internalalkynes with carbon monoxide catalyzed by [RhCl(CO)2}2]/CO(NH2)2 in the presence of water (see scheme).
Annulative π-Extension by Cp*Co(III)-Catalyzed Ketone-Directed <i>peri</i>-Annulation: An Approach to Access Fused Arenes
作者:Arya Bhattacharyya、Md Raja Sk、Supreeta Sen、Samrat Kundu、Modhu Sudan Maji
DOI:10.1021/acs.orglett.3c03443
日期:2023.12.8
ed benzo[e]pyrenes, benzotetraphenes, and pyrenes. Comprehensive density functional theory studies buttress the mechanistic pathway comprising key steps like peri-C–H activation, alkyne 1,2-migratory insertion, and nucleophilic attack toward ketone, this attack being the rate-determining step. In addition, π-conjugated 1,1′-bipyrenes, potential photocatalyst pyrene-quinones, and putative n-type semiconductor
实现了掩蔽湾区选择性第一行过渡金属 Cp*Co(III) 催化的芳烃衍生酮的环 π 延伸,以提供 K 区功能化的苯并[ e ]芘、苯并四吩和芘。全面的密度泛函理论研究支持了包括关键步骤的机制途径,如peri -C-H激活、炔烃1,2-迁移插入和对酮的亲核攻击,这种攻击是速率决定步骤。此外,还获得了π-共轭1,1'-联芘、潜在的光催化剂芘醌和推定的n型半导体含氰基二苯并[ de , qr ]并四苯。